航海英語(yǔ)探火與消防設(shè)備單項(xiàng)選擇題每日一練(2019.01.18)

來(lái)源：考試資料網(wǎng)

1 After extinguishing a fire with CO₂，it is advisable to（）.

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2 As compared to carbon dioxide，dry chemical has which advantage?（）.

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3 An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.

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4 No outlet on a fire hydrant may point above the horizontal in order to（）.

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5 A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by，the next step is to（）.

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